Maggie 1.6qr cross-0ver upgrade 'mod box'
A trip to San Diego plastics yielded 1/8" cuts of black acrylic:
(2) 14x7, (2) 14 1/16 x 7 1/8 (4) 14x5, (4) 5x7(2) 12x16 1/2
one tube of weld-on glue #16 total cost to build two boxes:$26.55
recommend investing in 90 degree angled clamps $7 ea Home Depot:
used 'scrap' Plexiglas for test runs.. easy on the glue; once 'cured' incredibly strong!
the 'old' box (ah; the memories..)$3.00 from Michael's art chain outlet
finishing touch's. Note Cardas binding post upper left
(below) rear plate drilled 5/16th bit (Caveats: drill 'nice-n-slow' plates easy to crack!)
Post 'post'....... Cardas binding post ($16 per set) gold plated spade
connector type (DIYCABLE.COM)
maggie in high-heels
(The following is from a text I found online; it's author and origin long since forgotten.
My gratitude, apologies and any errors to it's rightful owner :)
The goal of the exercise is to hold the speaker cabinet
perfectly still relative to the free moving
Speaker voice coil/cone assembly, which ensures that most of the
electrical energy (musical
acoustic energy (some will always be
If the speaker cabinet is free to move, some of the electrical energy
will go into
the musical signal becomes distorted,
the cabinet around
instead of driving the loudspeaker cone.
mastic (Bleak) work in slightly different ways to achieve the same goal.
heavy for the speaker motor
and amplitudes, there is less resistance in
cone + air than there is in moving the cabinet + stand. This is why adding
signal we hear.
area of the speaker relative to its mass,
To use a real life
example, imagine you are pushing a 200lb
a shiny flat floor. Easy to move huh! Now place the same box on 4 small
the contact area has been reduced
on an inch. In the
first instance, the box is exerting a force
onto its contact area. On the nails, the
box in exerting a force of 5000lbs/sq inch
Onto its contact area. Again, from the music signal's point of view, the
effect is to make the cabinet
compared to the
speaker cone + air.
spikes or mastic
prevent the cabinet moving relative to its
and relative to the speaker cone.
mastic will help
when the speaker cabinet itself flexes i.e.
to the speaker cone only. This not only perverts the signal (as described
why manufacturers build very stiff, well
underneath as well as on top
of speaker stands and mass load them
with lead and sand.
cases and are probably the best technical
light weight speakers and
stands. This is because the effective mass
gain is a multiple of the cabinet weight. Spikes have the obvious disadvantage
of marring the finish
handle as speaker weight increases.
heavier speakers to
their stands. The effective mass gain
equal to the weight of the stand but is
enhanced when the speaker stands are
themselves spiked to the floor.
and stands will
enhance the effect of both.
excess wires trimmed later..
wires trimmed, nestled in shipping foam; let's rock!